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In 2010 ATLAS has seen the first proton-proton collisions at 7 TeV. This year a collision rate of nearly 10 MHz has been achieved. Events of potential interest for physics analysis are selected by a three-level trigger system, with a final recording rate of about 200 Hz. The first level (LI) is implemented in customized hardware, the two levels of the high level trigger (HLT) are software triggers...
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